Abstract
The article presents a description of geometry of Banach structures imitating arbitrage absence type phenomena in the models of financial markets. In this connection we uncover the role of reflexive subspaces (replacing classically considered finite-dimensional subspaces) and plasterable cones. A number of new geometric criteria for arbitrage freeness is proven; and an alternative description of a martingale measure existence not exploiting dual objects is obtained.
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Lebedev, A.V., Zabreiko, P.P. Banach geometry of arbitrage free markets. Positivity 25, 679–699 (2021). https://doi.org/10.1007/s11117-020-00782-6
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DOI: https://doi.org/10.1007/s11117-020-00782-6